Otsubo, Auro Akio, Fábio Martins Mercante, Rogério Ferreira da Silva, and Clovis Daniel Borges. 2014. “Soil Tillage Systems, Cover Crops and Productivity in Cassava”. Pesquisa Agropecuaria Brasileira 43 (3): 327-32. https://doi.org/10.1590/S1678-3921.pab2008.v43.19519.